EP1676351B1 - Ringförmiger stapel von geschichteten blechen - Google Patents

Ringförmiger stapel von geschichteten blechen Download PDF

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Publication number
EP1676351B1
EP1676351B1 EP04789670A EP04789670A EP1676351B1 EP 1676351 B1 EP1676351 B1 EP 1676351B1 EP 04789670 A EP04789670 A EP 04789670A EP 04789670 A EP04789670 A EP 04789670A EP 1676351 B1 EP1676351 B1 EP 1676351B1
Authority
EP
European Patent Office
Prior art keywords
lamination
portions
recess
stack
edge portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP04789670A
Other languages
English (en)
French (fr)
Other versions
EP1676351A1 (de
Inventor
Orlando Starke
Rogério Ribeiro MORRONE
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Whirlpool SA
Original Assignee
Whirlpool SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Whirlpool SA filed Critical Whirlpool SA
Publication of EP1676351A1 publication Critical patent/EP1676351A1/de
Application granted granted Critical
Publication of EP1676351B1 publication Critical patent/EP1676351B1/de
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/14—Stator cores with salient poles
    • H02K1/145—Stator cores with salient poles having an annular coil, e.g. of the claw-pole type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
    • F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
    • F04B35/045—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/16—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with polarised armatures moving in alternate directions by reversal or energisation of a single coil system

Definitions

  • the present invention refers to the configuration of lamination elements which form an internal annular stack designed to carry the coil of a linear motor.
  • This type of motor is composed of an annular stack of metallic laminations of the stator, around which is wound a copper wire, forming the induction coil of the linear motor.
  • the linear motor further presents another assembly of metallic laminations which also form a radial stack, denominated external annular stack and which defines, with the stator, an annular space within which moves the magnetic impeller, whose function is to produce the linear movement of the piston of the compressor, so that said piston can perform the compression operation within a cylinder of the compressor.
  • the construction of the linear motor presents two-piece laminations, with their equally shaped lamination portions being laterally seated in relation to each other, in order to define respective lamination stack portions to be affixed to each other to form the stator.
  • one of the lamination portions is provided with a recess in a respective seating region to receive a complementary projection defined in the other lamination portion, upon fixation of the stack portions to form the stator.
  • US5318412 discloses a construction of a linear motor provided with a stator constructed of two halves, being laterally seated in relation to each other, in order to be affixed to each other to form the stator.
  • one of the halves is provided with a recess in a respective seating region to receive a complementary projection defined in the other of the halves, both halves being fixed to each other through screws.
  • Said prior art solution presents a magnetic core of the motor as a massive steel, which allows that the fixation between the halves is obtained through screws.
  • said fixation solution does not apply to the motor constructions as that presented at PI0203507.3 , in which the displacer (which should be formed by magnetic elements) oscillates in the external diameter of the stator of the motor.
  • Another object of the present invention is to provide a lamination stack as mentioned above, which allows compensating for the magnetic losses generated by the lamination being divided in two portions and by the additional gap generated by the fixation of said portions through adhesive.
  • annular stack of lamination elements for forming the stator of a linear electric motor as defined in independent claim 1.
  • the invention presents, besides the advantages of the known conventional prior art constructions, which are: the possibility of winding the copper wire that forms the coil in conventional machines; obtaining a large amount of windings of the copper wire around the coil; complying with the requirements for the electric insulation of said coil, according to international electric safety rules and with said insulation being achieved through a conventional process; and reliability of the fixation of the copper windings of the coil as a whole, the additional advantages of: presenting better condition for resisting traction and shearing forces; and compensating for the magnetic losses resulting from the fixation provided between the lamination portions upon formation of the annular stack of two-piece laminations of the stator.
  • the present invention is applied to the construction of the laminations of a stack of laminations which form the stator of a linear electric motor, generally used in a hermetic compressor of refrigeration systems, said compressor comprising, inside a shell (not illustrated), a motor-compressor unit including a non-resonant assembly formed by a linear motor and a cylinder 1, and a resonant assembly formed by a piston 2 reciprocating inside the cylinder 1, and an actuating means 3 external to the cylinder 1 and which carries a magnet 4 to be axially impelled upon energization of the linear motor, said actuating means 3 operatively coupling the piston 2 to the linear motor.
  • the linear motor is mounted around the cylinder 1 and the piston 2 and comprises an internal annular stack 5, which is formed by a plurality of metallic lamination elements 10 laterally seated in relation to each other, and in which is mounted a tubular coil 6; and an external annular stack 7 formed by a plurality of external metallic laminations;
  • Each internal and external annular stack is formed by the mutual lateral seating of the metallic laminations which are usually made of steel, defining a cylindrical internal surface for mounting, for example the internal annular stack 5, around the cylinder 1.
  • the external annular stack 7 forms, with the stator, an annular space within which moves the actuating means 3, whose function is to produce the linear movement of the piston 2 inside the cylinder 1.
  • the compressor further includes conventional resonant spring means 8, mounted in constant compression to the resonant assembly and to the non-resonant assembly and which are resiliently and axially deformable toward the displacement of the piston 2.
  • Each lamination element 10 presents an internal axial extension 11 and two external axial extensions 12 defining, as illustrated, a trapezoidal profile for the lamination element 10, with the smaller base coinciding with the internal axial extension 11.
  • Each lamination element 10 is defined by two lamination portions 13, 14, at least one of them having at least part of the internal axial extension 11 of the respective lamination element 10, said lamination portions 13, 14 being affixed to each other during the formation of the stator, as described in the co-pending Brazilian patent application PI0203507.3 , in order to complete the respective lamination element 10.
  • Each lamination element 10 presents a respective lamination portion 13, 14 having its respective internal axial extension 13a, 14a carrying a corresponding radial extension 13b, 14b.
  • each lamination element 10 In order to mutually affix the lamination portions 13, 14 or forming each lamination element 10, they are seated to each other through a respective seating region 15, 16, for example by mutually fitting said seating regions 15, 16, one of the latter presenting at least one recess 18 to be fitted in a corresponding projection 17 provided in the other seating region 15, 16 when the annular stack is mounted.
  • Each lamination portion 13, 14, presents a respective radially internal edge 13c, 14c to be mutually and laterally seated side by side with a radially internal edge 13c, 14c of an adjacent lamination portion 13, 14, defining a rectilinear alignment of each plurality of lamination portions 13, 14.
  • each plurality of lamination portions 13, 14 are retained to each other by the application of a fixation layer, for example in the form of an adhesive bead, in the seating regions 15, 16 of said lamination portions 13, 14.
  • a fixation layer for example in the form of an adhesive bead
  • each seating region 15, 16 has its contour comprising at least one first lamination edge portion 20 and at least one second lamination edge portion 30, the first lamination edge portion 20 being disposed according to an alignment that is at least substantially parallel to the axial alignment of the lamination portions 13, 14 and the second lamination edge portion 30 being united to the first lamination edge portion 20 forming an angle with the latter, a first lamination edge portion 20 of a lamination portion 13, 14 being seated and affixed to a first lamination edge portion 20 of the other lamination portion 13, 14 upon the formation of the respective lamination element 10, and a second lamination edge portion 30 of a lamination portion 13, 14 being affixed to a second lamination edge portion 30 of the other lamination portion 13, 14 upon the formation of the respective lamination element 10.
  • the seating regions 15, 16 of each lamination portion 13, 14 define, each one, at least one mounting and fixation region parallel to the radially internal edges 13c, 14c of the lamination portions 13, 14, in which the shearing forces increase the resistance of the adhesive that secures the lamination portions 13, 14 together in relation to the regions under traction forces.
  • each seating region 15, 16 may present at least one of the parts of recess 18 and projection 17, at least one first and one second lamination edge portion 20, 30 defining at least part of a recess 18 in one of the seating regions 15, 16 and part of a projection 17 in the other seating region 15, 16.
  • at least one first and one second lamination edge portion 20, 30 define at least one recess 18 and at least one projection 17.
  • the second lamination edge portions 30 may not have mutually complementary contours so as to be solely attached to each other, without necessarily being mutually seated, the distance between the second lamination edge portions 30 under fixation being filled by adhesive.
  • At least one recess 18 of a seating region 16 presents at least one first and one second lamination edge portion 20, 30 which are respectively seated and affixed to a first and to a second lamination edge portion 20, 30 of a projection 17 of the other seating region 15.
  • the parts of recess 18 and projection 17 present mutually complementary contours, thus reducing the amount of adhesive for the mutual fixation thereof and consequently reducing the magnetic losses caused by action of the air gap formed by the adhesive.
  • a seating region 16 presents at least one recess 18 which is open to the exterior of the respective lamination portion 14 and an additional recess 18a which is open to the interior of the recess 18, the other seating region 15 being provided with at least one projection 17 and with an additional projection 17a, each being respectively fitted in the recess 18 and in the additional recess 18a, these being provided in the other seating region 16, each recess 18 and additional recess 18a and each projection 17 and additional projection 17a presenting a respective axis, said axes being, for example, disposed according to the same axial alignment for assembly of the lamination portions 13, 14.
  • At least one recess 18 and an additional recess 18a and corresponding projection 17 and additional projection 17a are coaxial and, for example, aligned with the axis of the respective lamination portion 13, 14.
  • a seating region 16 presents a respective recess 18 and an additional recess 18a to be seated and retained to a projection 17 and to an additional projection 17a of the other seating region 15, said recess 18 and projection 17 occupying the whole width of the corresponding lamination portion 13, 14.
  • the additional recess 18a and the additional projection 17a present only one second lamination edge portion 30, transversal to the respective two first lamination edge portions 20.
  • the additional recess 18a has the two first lamination edge portions 20 united by at least one second lamination edge portion 30, the additional projection 17a having two first lamination edge portions 20 which are united to each other by at least one second lamination edge portion 30.
  • each respective seating region 15, 16 occupy only part of the width of the corresponding lamination portion 13, 14, for example only the median region of the width of the corresponding lamination portion 13, 14.
  • At least one of the seating regions 15 of one of the lamination portions 13 is provided with at least one of the parts defined by a stop portion and an abut portion and by a guide means and a guide following means, the other of said parts being provided in the other seating region 15, 16.
  • a second lamination edge portion 30 of one of the seating regions 15, 16 defines a stop portion, another second lamination edge portion 30 of the seating region 16 of the other lamination portion 14 defining an abut portion to be seated against said stop portion upon fixation of the lamination portions 13, 14.
  • said lamination edge portions 30 of the stop and abut portions define at least part of the respective recess 18 and projection 17.
  • a second lamination edge portion 30 of a seating region 15 of one of the lamination portions 13 defines a guide means
  • another second lamination edge portion 30 of the seating region 16 of the other lamination portion 14 defining a guide following means to be fitted in said guide means upon fixation of the lamination portions 13, 14.
  • the second lamination edge portions 30 of the guide means and guide following means define at least part of the respective recess 18 and projection 17.
  • the mutual fixation of the lamination portions 13, 14 for forming each lamination element 10 presents greater resistance, as a function of the provision of regions with shearing forces and as a function of an increase of the total bonding area in each seating region 15, 16 between the lamination portions 13, 14, such area increase between the lamination portions 13, 14 reducing the magnetic losses resulting from division of the lamination 10 and from the air gap effect generated by the adhesive thickness, the smallest the mutual fixation area of the seating regions, and the more the latter are orthogonal to the axis of the respective lamination portions 13, 14.
  • the gap resulting from the adhesive thickness is compensated by increasing the useful contact area, for example promoted by the larger extension in the joining region, particularly by the illustrated shape of the lamination portions 13, 14.
  • the present solution further allows the lamination portions 13, 14 to be fitted more easily, due to the provision of guide means and guide following means in the recess 18 and corresponding projection 17.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Linear Motors (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)

Claims (11)

  1. Ringförmige Schichtanordnung von Lamellenelementen zur Ausbildung des Stators eines elektrischen Linearmotors, mit einer rohrförmigen Spule (6), die in der ringförmigen Schichtanordnung aus Lamellenelementen (10) angebracht ist, wobei jedes Lamellenelement (10) zwei äußere axiale Fortsätze (12) und einen inneren axialen Fortsatz (11) aufweist, der durch zwei Lamellenabschnitte (13, 14) festgelegt ist, welche aneinander zu befestigen sind, um das jeweilige Lamellenelement (10) fertigzustellen, wobei jeder Lamellenabschnitt (13, 14) einen entsprechenden Sitzbereich (15, 16) mit mindestens einer Ausnehmung (18) aufweist, um einen entsprechenden Vorsprung (17), der im Sitzbereich (15, 16) des anderen Lamellenabschnittes (13, 14) vorgesehen ist, einzufügen und zu halten, wobei die Kontur jedes Sitzbereiches (15, 16) mindestens einen ersten und mindestens einen zweiten Lamellenrandabschnitt (20, 30) aufweist, wobei der erste Lamellenrandabschnitt (20) entsprechend einer Ausrichtung angeordnet ist, die zumindest im wesentlichen parallel zur axialen Ausrichtung der Lamellenabschnitte (13, 14) ist, und der zweite Lamellenrandabschnitt (30) mit dem ersten Lamellenrandabschnitt (20) unter Bildung eines Winkels mit letzterem zusammengefügt ist, wobei ein erster Lamellenrandabschnitt (20) eines Lamellenabschnittes (13, 14) nach Bildung des entsprechenden Lamellenelementes (10) an einem ersten Lamellenrandabschnitt (20) des anderen Lamellenabschnittes (13, 14) sitzt und befestigt ist und ein zweiter Lamellenrandabschnitt (30) eines Lamellenabschnittes (13, 14) nach Bildung des entsprechenden Lamellenelementes (20) an einem zweiten Lamellenrandabschnitt (30) des anderen Lamellenabschnittes (13, 14) befestigt ist, wobei der Sitzbereich (16) mindestens eine zur Außenseite des entsprechenden Lamellenabschnittes (14) hin geöffnete Ausnehmung (18) und eine zur Innenseite der Ausnehmung (18) hin geöffnete, zusätzliche Ausnehmung (18a) aufweist, und der andere Sitzbereich (15) mit einem Vorsprung (17) und mit einem zusätzlichen Vorsprung (17a) versehen ist, die jeweils in der Ausnehmung (18) sowie in der zusätzlichen Ausnehmung (18a) sitzen, welche im anderen Sitzbereich (16) vorgesehen sind.
  2. Schichtanordnung nach Anspruch 1, dadurch gekennzeichnet, daß die Achsen der Ausnehmung (18) und der zusätzlichen Ausnehmung (18a) mit gleicher Achsausrichtung zum Zusammenfügen der Lamellenabschnitte (13, 14) angeordnet sind.
  3. Schichtanordnung nach Anspruch 2, dadurch gekennzeichnet, daß mindestens eine Ausnehmung (18) und eine entsprechende zusätzliche Ausnehmung (18a) koaxial verlaufen.
  4. Schichtanordnung nach Anspruch 1, dadurch gekennzeichnet, daß die zusätzliche Ausnehmung (18a) zwei erste Lamellenrandabschnitte (20) aufweist, die über mindestens einen zweiten Lamellenrandabschnitt (30) zusammengefügt sind, wobei der zusätzliche Vorsprung (17a) mit zwei ersten Lamellenrandabschnitten (20) versehen ist, die über mindestens einen zweiten Lamellenrandabschnitt (30) zusammengefügt sind.
  5. Schichtanordnung nach Anspruch 1, dadurch gekennzeichnet, daß ein zweiter Lamellenrandabschnitt (30) eines Sitzbereiches (15) eines der Lamellenabschnitte (13) einen Anschlagabschnitt und ein weiterer zweiter Lamellenrandabschnitt (30) des Sitzbereiches (16) des anderen Lamellenabschnittes (14) einen Auflaufabschnitt festlegt, der bei Befestigung der Lamellenabschnitte (13, 14) am Anschlagabschnitt sitzen soll.
  6. Schichtanordnung nach Anspruch 5, dadurch gekennzeichnet, daß die zweiten Lamellenrandabschnitte (30) der Anschlag- und Anlaufabschnitte zumindest einen Teil der entsprechenden Ausnehmung (18) und des entsprechenden Vorsprungs (17) festlegen.
  7. Schichtanordnung nach Anspruch 1, dadurch gekennzeichnet, daß ein zweiter Lamellenrandabschnitt (30) eines Sitzbereiches (15) eines der Lamellenabschnitte (13) eine Führungseinrichtung und ein weiterer zweiter Lamellenrandabschnitt (30) des Sitzbereiches (16) des anderen Lamellenabschnittes (14) eine Führungsfolgeeinrichtung festlegt, die beim Befestigen der Lamellenabschnitte (13, 14) in der Führungseinrichtung sitzen soll.
  8. Schichtanordnung nach Anspruch 7, dadurch gekennzeichnet, daß die zweiten Lamellenrandabschnitte (30) der Führungseinrichtung und der Führungsfolgeeinrichtung zumindest einen Teil der entsprechenden Ausnehmung (18) und des entsprechenden Vorsprungs (17) festlegen.
  9. Schichtanordnung nach Anspruch 1, dadurch gekennzeichnet, daß die Ausnehmung (18) und der Vorsprung (17) jedes entsprechenden Sitzbereiches (15, 16) nur einen Teil der Breite des entsprechenden Lamellenabschnittes (13, 14) festlegen.
  10. Schichtanordnung nach Anspruch 1, dadurch gekennzeichnet, daß die Sitzbereiche (15, 16) zweier aneinander zu befestigender Lamellenabschnitte (13, 14) eine Befestigungseinrichtung aufnehmen.
  11. Schichtanordnung nach Anspruch 10, dadurch gekennzeichnet, daß die Befestigungseinrichtung durch ein klebendes Material festgelegt ist.
EP04789670A 2003-10-23 2004-10-21 Ringförmiger stapel von geschichteten blechen Expired - Fee Related EP1676351B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BR0304040-2A BR0304040A (pt) 2003-10-23 2003-10-23 Pacote anelar de elementos de lâminas
PCT/BR2004/000205 WO2005041386A1 (en) 2003-10-23 2004-10-21 Annular stack of lamination elements

Publications (2)

Publication Number Publication Date
EP1676351A1 EP1676351A1 (de) 2006-07-05
EP1676351B1 true EP1676351B1 (de) 2007-12-05

Family

ID=36499783

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04789670A Expired - Fee Related EP1676351B1 (de) 2003-10-23 2004-10-21 Ringförmiger stapel von geschichteten blechen

Country Status (9)

Country Link
US (1) US20070057580A1 (de)
EP (1) EP1676351B1 (de)
JP (1) JP2007534285A (de)
KR (1) KR20060126904A (de)
CN (1) CN1856922A (de)
BR (1) BR0304040A (de)
DE (1) DE602004010541T2 (de)
ES (1) ES2297499T3 (de)
WO (1) WO2005041386A1 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100738219B1 (ko) * 2003-12-23 2007-07-12 삼성에스디아이 주식회사 유기 전계 발광 소자용 중간층 형성 물질 및 이를 이용한유기 전계 발광 소자
BRPI1103496A2 (pt) * 2011-07-20 2013-10-01 Whirlpool Sa motor linear para compressor e compressor provido de motor linear
JP5879975B2 (ja) * 2011-11-30 2016-03-08 いすゞ自動車株式会社 直動発電機
CN103872805A (zh) * 2012-12-14 2014-06-18 海尔集团公司 内定子片、内定子及使用该内定子的压缩机
KR102242373B1 (ko) * 2014-08-25 2021-04-20 엘지전자 주식회사 리니어 압축기

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3443137A (en) * 1967-05-15 1969-05-06 Dominion Electrohome Ind Ltd Laminations and magnetic core for motor stators and transformers
US4835839A (en) * 1985-11-12 1989-06-06 General Electric Company Method of fabricating a salient pole electronically commutated motor
DE4037953A1 (de) * 1990-11-29 1992-06-04 Bosch Gmbh Robert Stator fuer eine elektrische maschine
US5318412A (en) * 1992-04-03 1994-06-07 General Electric Company Flexible suspension for an oil free linear motor compressor
GB2310545B (en) * 1996-02-22 2000-04-19 Honda Motor Co Ltd Stator core and method and apparatus for assembling same
US5945748A (en) * 1997-04-29 1999-08-31 Lg Electronics, Inc. Linear motor structure for linear compressor
CN1279684C (zh) * 2000-08-03 2006-10-11 Fdk株式会社 步进电机
KR100367603B1 (ko) * 2000-11-20 2003-01-10 엘지전자 주식회사 멀티 윈도우형 리니어 모터
BR0203507A (pt) * 2002-07-03 2004-05-25 Brasil Compressores Sa Processo de formação de estator de motor linear, pacote anelar de elementos de lâminas e estator de motor eletrico
US7122933B2 (en) * 2004-05-19 2006-10-17 Emerson Electric Co. Reduced coil segmented stator

Also Published As

Publication number Publication date
DE602004010541T2 (de) 2008-11-27
WO2005041386B1 (en) 2005-06-02
KR20060126904A (ko) 2006-12-11
US20070057580A1 (en) 2007-03-15
BR0304040A (pt) 2005-06-28
CN1856922A (zh) 2006-11-01
WO2005041386A1 (en) 2005-05-06
EP1676351A1 (de) 2006-07-05
ES2297499T3 (es) 2008-05-01
JP2007534285A (ja) 2007-11-22
DE602004010541D1 (de) 2008-01-17

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